Straight pipe no border, expressed more commonly in its abbreviated form, "SPNB".

Defined as the absence of the typical male contraceptive (Condom) during coitus.

In more general senses, can be used to delineate the use of a straight exhaust system on a motor vehicle.
I porked a total nade Straight Pipe No Border last night! I need to get checked out asap!
by Bottle_o_Beer September 22, 2010
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